<template>
    <div>
        <div class="search">
           <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">
                  {{item.name}}
                </li>
                <li class="search-item border-bottom" v-show="hasNoData">
                   没有找到匹配数据
                </li>
            </ul>
        </div>
    </div>
</template>

<script>
import BScroll from 'better-scroll'
import {mapMutations} from 'vuex'
export default {
    name:"CitySearch",
    props:{
        cities: Object
    },
    data(){
        return{
            keyword:'',
            list:[],
            timer: null
        }
    },
    methods:{
        handleCityClick(city){
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
     },
    computed:{
        hasNoData(){
            return !this.list.length
        }
    },
    watch:{
        keyword () {
            if(this.timer){
                clearTimeout(this.timer)
            }
            if(!this.keyword){
                this.list=[]
            }
            this.timer = setTimeout(() => {
                const result = [];
                for(let i in this.cities){
                    this.cities[i].forEach((value) => {
            
                        if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
                             result.push(value)
                        }
                    });
                }
                this.list = result
            }, 100);
        }
    },
    mounted () {
         this.scroll = new BScroll(this.$refs.search)
     }
    
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .search
    height: .72rem
    padding: 0 .1rem
    background: $bgColor
    .search-input
      box-sizing: border-box
      width: 100%
      height: .62rem
      padding: 0 .1rem
      line-height: .62rem
      text-align: center
      border-radius: .06rem
      color: #666
     
  .search-content
    z-index: 101
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    background: #eee
    .search-item
      line-height: .62rem
      padding-left: .2rem
      background: #fff
      color: #666
</style>


